CN112334345A - Drive unit for a drive train of an electrically driven motor vehicle and drive arrangement with said drive unit - Google Patents

Drive unit for a drive train of an electrically driven motor vehicle and drive arrangement with said drive unit Download PDF

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Publication number
CN112334345A
CN112334345A CN201980041405.0A CN201980041405A CN112334345A CN 112334345 A CN112334345 A CN 112334345A CN 201980041405 A CN201980041405 A CN 201980041405A CN 112334345 A CN112334345 A CN 112334345A
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China
Prior art keywords
drive unit
drive
electric machine
liquid
flow system
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Pending
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CN201980041405.0A
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Chinese (zh)
Inventor
安德里亚斯·特赫肯舒
史蒂芬·莱曼
卡斯滕·梅耶
马尔科·格雷特
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Publication of CN112334345A publication Critical patent/CN112334345A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B60K17/24—Arrangements of mountings for shafting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/24—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D28/00—Electrically-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0426—Means for guiding lubricant into an axial channel of a shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0473—Friction devices, e.g. clutches or brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0476—Electric machines and gearing, i.e. joint lubrication or cooling or heating thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
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    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Abstract

The present invention relates to a drive unit, and to a drive device having the drive unit. The drive unit (100) comprises a first and a second electric machine (110,120) and an output shaft (140), wherein a rotor (121) of the second electric machine (120) is connected to the output shaft (140) for common rotation, and wherein the drive unit (100) further has a disconnect clutch (150) by means of which the rotor (111) of the first electric machine (110) can be connected to or to the output shaft (140) for transferring torque, wherein the drive unit (100) further has a first flow system (10) for effecting a flow of a first liquid for at least partially cooling at least one electric machine (110,120) and a second flow system (20) for effecting a flow of a second liquid, the first and second flow systems (10, 20) being arranged and designed such that heat from the first liquid in the first flow system (10) can be transferred to the second flow system (20) The second liquid of (1).

Description

Drive unit for a drive train of an electrically driven motor vehicle and drive arrangement with said drive unit
Technical Field
The present invention relates to a drive unit for a drive train of an electrically driven motor vehicle and to a drive arrangement comprising a drive unit according to the invention.
Background
Drive devices for hybrid vehicles are known from the prior art, which comprise, in particular, an internal combustion engine, a first electric machine and a second electric machine.
DE 102015222690 a1, DE 102015222691 a1 and WO 2017084887 a1 describe methods for controlling such a drive, wherein the drive can be operated in several operating modes.
In DE 102015222690 a1, a series hybrid operation is described, in which a traction drive torque is generated by means of the second electric machine and an internal combustion engine drives the first electric machine to generate electrical energy. It is described how the internal combustion engine is operated at an operating point, wherein the overall efficiency of the drive means depends on the efficiency of the internal combustion engine and the efficiency of the first electric machine.
Documents DE 102015222691 a1 and WO 2017084887 a1 describe performance oriented modes and consumption oriented modes, each of which depends on certain conditions. The condition includes increasing the target drive value to an intermediate value between an internal combustion engine threshold value representing a maximum drive value in parallel hybrid operation in which only the internal combustion engine provides tractive drive torque and a parallel hybrid mode threshold value representing a maximum drive value in parallel boost hybrid mode.
DE 102015222692 a1, WO 2017084888 a1, DE 102015222694 a1 and WO 2017084889 a1 describe a method for operating a drive device of a hybrid vehicle for driving drive wheels, wherein the drive device comprises an internal combustion engine, a first electric machine coupled to the internal combustion engine, a second electric machine, a battery and a main clutch between the internal combustion engine and the drive wheels.
DE 102015222692 a1 and WO 2017084888 a1 describe the operation of the drive device in one of three operating modes (i.e. electric-only operation, series hybrid operation or parallel hybrid operation), wherein the tractive drive torque provided during the change from the first operating mode to the second operating mode corresponds to a curve that can be selected appropriately between the tractive drive torques provided before and after the change.
DE 102015222694 a1 and WO 2017084889 a1 disclose that a transmission is also arranged between the internal combustion engine and the drive wheels.
Furthermore, the corresponding citation describes a hybrid vehicle having a hybrid drive.
A hybrid vehicle repeatedly described in the related art includes an internal combustion engine, first and second electric machines, at least one drive wheel, a main clutch, and first and second clutches. The main clutch is disposed between the internal combustion engine and the drive wheels, the first clutch is disposed between the first electric machine and the output shaft of the internal combustion engine, and the second clutch is disposed between the second electric machine and the drive wheels.
From DE 102017128289.0 (not yet published), a drive unit for a drive train of a hybrid vehicle is known, which drive unit has an internal combustion engine, a first electric machine, a second electric machine, a first transmission stage and a drive shaft of the first electric machine and/or the second electric machine. Furthermore, the drive unit comprises a transmission subunit via which the drive shaft of the respective electric machine is coupled or can be coupled to the wheel drive shaft. The second transmission stage is connected to a countershaft unit, wherein the countershaft unit has an integral clutch and is further connected to the wheel drive shaft, so that the internal combustion engine can be connected to the wheel drive shaft via the second transmission stage depending on the position of the clutch.
DE 102017127695.5 (also not disclosed) discloses a drive train for a hybrid vehicle having a transmission input shaft in operational relationship with a first electric machine and an internal combustion engine via a first partial drive train to transmit torque, and with a second electric machine via a second partial drive train to transmit torque. The second electric machine is permanently connected to the transmission input shaft for transmitting torque, and the first electric machine and the internal combustion engine may be connectible connected to the transmission input shaft for transmitting torque. The first motor and/or the second motor may be designed to be cooled. It is particularly preferred if the cooling is effected by means of water cooling from the vehicle cooling circuit or by means of oil cooling from the transmission oil of the transmission. Furthermore, the separating clutch used can also be designed as an oil-cooled multi-plate clutch.
Disclosure of Invention
The object of the present invention is to provide a drive unit for a drive train of an electrically driven motor vehicle and a drive device equipped with such a drive unit, in which the individual components, in particular the electric motor, can be optimally cooled, so that wear is reduced during operation.
This object is achieved by a drive unit according to the invention as claimed in claim 1 and a drive device according to the invention as claimed in claim 8. Advantageous embodiments of the drive unit are listed in the dependent claims 2 to 7. Advantageous embodiments of the drive are set forth in the dependent claims 9 and 10.
The features of the claims, including the features of the description given in the description below and of the figures comprising additional embodiments of the invention, may be combined in any technically useful manner.
The invention relates to a drive unit for a drive train of an electrically driven motor vehicle, in particular a hybrid vehicle, having a first and a second electric machine and an output shaft, which is also referred to as transmission input shaft. The rotor of the second electrical machine is connected to the output shaft for common rotation. Furthermore, the drive unit comprises a separating clutch, with which the rotor of the first electrical machine and thus the internal combustion engine connected to the first shaft (which is connected to the rotor of the first electrical machine for common rotation) can be connected or connected to the output shaft for transmitting torque. The drive unit also has a first flow system for effecting a flow of a first liquid for at least partially cooling the at least one electric motor and a second flow system for effecting a flow of a second liquid, the first and second flow systems being arranged and designed such that heat from the first liquid in the first flow system can be transferred to the second liquid in the second flow system.
The first fluid is preferably also used for lubricating movably arranged components, in particular an electric motor or a gear transmission. The first flow system is also equipped in a corresponding manner in order to supply the first liquid to the component to be lubricated or cooled. In this case, the flow of the first liquid is preferably effected by the drive unit via the first flow system. Provision is made in particular for two electric machines to be arranged in series. In a preferred embodiment, it is provided that the rotors of the two electric machines or their axes of rotation are arranged coaxially. A disconnect clutch is a switchable clutch that can be switched from an open state to a closed state and vice versa. The disconnect clutch is located in a torque transfer path between the two electric machines.
The drive unit may be designed such that the first shaft firmly connected to the rotor of the first electrical machine is arranged radially inside the output shaft firmly connected to the rotor of the second electrical machine.
The first shaft may be designed to be divided, i.e. in the form of a central hollow shaft on which a hub connected for co-rotation is arranged in some areas, which hub is also connected for co-rotation to the rotor of the first electric machine.
Thus, the radially inner side of the disconnect clutch may be connected for common rotation to a hub on the first electrical machine, and the radially outer side of the disconnect clutch may be connected to an output shaft connected for common rotation to a rotor of the second electrical machine.
Furthermore, the drive unit may have a transmission which is operatively connected to an output shaft of the drive unit (also referred to as transmission input shaft) in such a way that the torque provided by the output shaft or the rotational movement effected by the output shaft can be conducted via the transmission in steps of increasing or in steps of decreasing to another transmission unit of the motor vehicle or also directly to the drive wheels of the motor vehicle. The transmission may comprise a differential transmission or be so designed. The transmission may include a first gear that meshes with external teeth on the output shaft. The first gear therefore realizes a gear stage in the drive unit. The first gear may be coupled for common rotation to a countershaft of the transmission, which in turn has external teeth meshing with an input gear of the differential transmission to achieve a third gear stage.
In particular, it is provided that the drive unit has a heat exchanger for transferring heat from the first liquid to the second liquid. In a corresponding manner, the first flow system and the second flow system are connected to a heat exchanger or heat exchange device in which heat is transferred from the first liquid to the second liquid. The liquids of the two flow systems flow through a heat exchanger or heat exchange device so that heat can be transferred from the first liquid to the second liquid.
The first flow system may further be designed such that the first liquid may also be supplied to the disconnect clutch for cooling and/or lubrication purposes. This embodiment also makes it possible for the first liquid delivered by the first flow system to be supplied only to the separator clutch for the purpose of cooling or lubricating the separator clutch. In this embodiment, a corresponding hydraulically actuatable actuator for actuating the separating clutch can be dispensed with.
The first flow system may also supply the first fluid to bearings, friction elements or gear stages of the sub-transmission for cooling or lubrication purposes.
In particular, provision is made for the respective flow system to be implemented as a flow circuit, wherein preferably oil is used as the first liquid and water is used as the second liquid.
The second flow circuit may thus be a water circuit integrated in the housing of the electric machine to be cooled for cooling the oil in the first flow circuit by means of the heat exchange device.
Alternatively or additionally, the first flow system and the disconnect clutch may be arranged and configured such that the first fluid may be supplied from the first flow system to the disconnect clutch for the purpose of hydraulically actuating the disconnect clutch. However, this alternative embodiment does not preclude the disconnect clutch from also being cooled by the liquid in the first flow system.
Further, the drive unit according to the present invention may have: a source of volumetric flow, in particular a pump; a hydraulic clutch actuator as an actuating system for actuating the disconnect clutch; and a switching device, with which the liquid volume flows provided by the volume flow source can be supplied sequentially to the motor or the clutch actuator. Thus, sequential actuation of the disconnect clutches and cooling or lubrication of the electric machine may be performed. The switching device may be, in particular, 3/2 way valve. The drive unit may have a hydraulic control unit for controlling the volumetric flow sources configured as hydraulic pumps and/or switching devices as required.
The separator clutch is then supplied with a volumetric flow of liquid using a pressurized line.
In an alternative embodiment, provision is made for the separating clutch to be electromechanically actuable. Corresponding electromechanical actuators are provided for this purpose. The resulting liquid volume flow can then be used exclusively for cooling.
In a further preferred embodiment of the drive unit, it is provided that the first flow system of the at least one electric machine has a branch into the first cooling path and into the second cooling path, respectively, so that the electric machine can be cooled in the radial interior formed by its rotor and also on its radial exterior. Furthermore, the drive unit can have an oil filter, which is preferably arranged in the transmission sump.
The hydraulic components of the drive unit may form a hydraulic unit which is preferably mechanically connected directly to the housing of the electric machine to be cooled or integrated therein.
In particular, the heat exchanger may be part of the housing of the electric machine or directly mechanically connected to the housing.
A further aspect of the invention is a drive device having a drive unit according to the invention and having an internal combustion engine which is coupled or can be coupled, in particular indirectly, to a rotor of a first electric machine for common rotation. The internal combustion engine is connected to the first shaft via a first shaft or via another coupling device, with a vibration damper interposed as necessary.
Furthermore, the drive device according to the invention may comprise an input element of a transmission or of a wheel drive, wherein the internal combustion engine is mechanically connected or mechanically connectable to the transmission via the drive unit or to the input element of the wheel drive via a separating clutch of the drive unit. In an advantageous embodiment, the drive means comprise at least one wheel drive shaft which is connected to the output shaft of the drive unit via a transmission, so that the rotary motion effected by the output shaft can be transmitted to the wheel drive shaft via the transmission.
In addition, the drive device according to the invention can have a first transmission stage between the internal combustion engine and a first shaft connected to the rotor of the first electrical machine for co-rotation for the purpose of converting the speed of the rotary motion effected by the internal combustion engine to the first shaft.
The output element of the internal combustion engine may be a damper unit or a clutch for opening and closing a torque transmission path between the internal combustion engine and the drive unit, or a combination of a damper unit and a clutch. Furthermore, the output element can have as a component an internal toothed gear which meshes with external teeth of the first shaft, so that the first transmission stage is realized.
Drawings
The above invention is explained in detail below on the basis of the related technical background and with reference to the related drawings showing preferred embodiments. The invention is in no way limited by the purely schematic drawings, but it should be pointed out that the embodiments shown in the drawings are not limited to the dimensions shown. In the drawings:
FIG. 1: the drive device according to the invention is shown in a sectional view,
FIG. 2: a side view of the drive means is shown,
FIG. 3: a sectional view of a partial region of the drive device is shown from above,
FIG. 4: a sectional view of a partial region of the drive device is shown from the side, and
FIG. 5: an enlarged view of the area of the cross-sectional view shown in fig. 4 is shown.
Detailed Description
Fig. 1 shows a drive unit 100 for a drive train of an electrically driven motor vehicle, in particular a hybrid vehicle, having a first electric machine 110 and a second electric machine 120, which are both arranged on a common axis of rotation 101. The rotor 111 of the first electric machine 110 is arranged coaxially with the rotation axis 101 and is also arranged coaxially with the rotor 121 of the second electric machine 120. The stator 112 of the first motor 110 and the stator 122 of the second motor 120 are accommodated in the housing 102 of the drive unit 100.
The rotor 111 of the first electrical machine is connected to the first shaft 130 for common rotation. The rotor 121 of the second electrical machine 120 is connected for common rotation to an output shaft 140, which may also be referred to as a transmission input shaft.
Furthermore, the drive unit 100 comprises a separating clutch 150, with which the first electric machine 110 and thus the internal combustion engine connected to the first shaft 130 (which is connected to the rotor 111 of the first electric machine 110 for common rotation) can be connected or connected to an output shaft for transmitting torque.
In the embodiment shown here, the first shaft 130 is designed in two parts, namely from a central hollow shaft 132 and a hub 133 which is positioned on this hollow shaft 132 and is connected thereto for co-rotation, wherein the hub 133 is also connected in a fixed manner to the rotor 111 of the first electric machine 110.
The hub 133 forms the radially inner side 151 of the disconnect clutch 150 or is firmly connected to this input side of the disconnect clutch 150.
A radially outer side 152 of the disconnect clutch 150 (which radially outer side implements the output side of the disconnect clutch 150) is connected for common rotation with the output shaft 140.
The disconnect clutch 150 is a switchable clutch that can be switched from an open state to a closed state and vice versa. For this purpose, an actuating system 153 is assigned to the separating clutch 150.
Thus, when the disconnect clutch 150 is closed, torque may be transferred from the first shaft 130 to the output shaft 140, and vice versa.
In the exemplary embodiment shown here, therefore, it is provided that the two electric machines 110,120 are arranged in series, wherein the rotors 111,121 of the two electric machines 110,120 or their rotational axes are arranged coaxially.
The first shaft 130 or its central hollow shaft 132 runs radially inside the output shaft 140, whereby the total volume required for the drive unit 100 can be kept small.
Furthermore, the drive unit 100 shown here comprises a transmission 160 which is operatively connected to the output shaft 140 of the drive unit 100 (also referred to as transmission input shaft) in such a way that the torque provided by the output shaft 140 or the rotational movement effected by the output shaft 140 can be conducted via the transmission 160 stepwise increasing or stepwise decreasing to another transmission unit of the motor vehicle or also directly to the drive wheels of the motor vehicle.
In the embodiment shown herein, the transmission 160 includes a differential transmission 170.
Further, the transmission 160 includes a first gear 161 that meshes with the external teeth 141 on the output shaft 140. The second gear stage 162 is thus realized in the drive unit 100 by the first gear 161. The first gear 161 is coupled for common rotation to a layshaft 163 of gears 160, whose outer teeth 164 in turn mesh with an input gear 171 of a differential gear 170, thereby realizing a third gear stage 172.
The drive unit 100 is part of a similar shown embodiment of a drive device 200 according to the invention.
The drive device 200 also has an internal combustion engine (not shown here) which, when connected to the illustrated connection 210, is coupled to the rotor 111 of the first electric machine 110 via the first shaft 130 for common rotation or is coupled thereto with the interposition of a further coupling.
The illustrated drive 200 is designed such that a first transmission stage 142 is formed between a connection 210 for an internal combustion engine (not shown here) and the first shaft 130 connected to the rotor 111 of the first electric machine 110 for co-rotation, for the purpose of gradually increasing the speed of the rotary motion effected on the first shaft 130 by the internal combustion engine or its connection 210.
For this purpose, an output element 220 of the internal combustion engine is provided, which may have a damper unit 221 or a clutch 222 for opening and closing a torque transmission path between the internal combustion engine and the drive unit 100, or the shown combination of damper unit 221 and clutch 222.
Furthermore, the output element 220 comprises as a component an internal toothed gear 223 which meshes with the external toothing 131 of the first shaft 130, so that the first transmission stage 142 is realized.
It can be seen that in the exemplary embodiment shown here, the axis of rotation of the output element 220 is laterally offset from the axis of rotation 101 of the drive unit 100.
In this way, the rotational movement generated by the internal combustion engine (not shown here) can be guided on the first shaft 130 via the output element 220 and the first transmission stage 142, so that the rotor 111 of the first electric machine 110 located thereon can be set in rotational movement in order to function as a generator.
When the disconnect clutch 150 is closed, the applied rotational motion (possibly amplified by the motor drive through the first motor 110) may be transferred from the first shaft 130 to the output shaft 140. Since the rotor 122 of the second electric machine 120 is connected to the output shaft 140 in common rotation, the torque provided by the second electric machine 120 can also be applied to the output shaft 140.
Alternatively, when the disconnect clutch 150 is disengaged, only the second motor 120 may be operated alone to rotate the output shaft 140.
The rotational movement of the output shaft 140 is guided via its outer toothing 141 to the first gear 161 of the connected gear 160, in which the second gear stage 162 is realized.
Torque or rotational motion is directed from the first gear 161 to a countershaft 163 from which it is transmitted to a differential 170 via an input gear 171.
Torque is transferred from the differential transmission 170 to a wheel drive shaft (not shown here) or, if necessary, to another transmission to step up or down torque or speed.
The illustrated drive device 200 can achieve a variety of drive states, such as operating the internal combustion engine alone to drive the motor vehicle, or adding the second electric machine and/or the first electric machine, and operating the generator of the first electric machine simultaneously during operation of the internal combustion engine and/or the second electric machine, and operating the second electric machine alone, or resuming operation of the first electric machine and/or the second electric machine.
In fig. 2 to 5 a hydraulic unit 1 for use according to the invention is shown in principle, together with flow systems 10, 20 connected thereto and their components.
Fig. 2 shows the hydraulic unit 1 as a compact unit in a side view, in which a volume flow source 50 (not shown in detail), in particular a pump, and a hydraulic control unit 60 (also not shown in detail) are arranged. The hydraulic unit 1 is accommodated in a common housing 102, which at the same time is also the housing of the second electric machine 120.
The hydraulic unit 1 includes: a connection for a cooling line 13, with which coolant can be conducted into the unit to be cooled; and a connection for an actuation line 90, with which a fluid for actuating the separating clutch can be conducted.
Furthermore, two cooling water connections 22 can be seen in fig. 2 for supplying the second flow system with liquid.
In the lower region, an oil filter 80 can be seen, which is located in an oil sump 81, which represents a reservoir for the liquid to be used. From this sump 81, an intermediate line 30 leads to the hydraulic unit 1 in order to supply the hydraulic unit with liquid.
The hydraulic unit 1 or the volumetric flow source 50 or the pump integrated therein sucks in liquid through the oil filter 80. The volumetric flow source 50 then sets the volumetric flow of liquid through a hydraulic control unit (not shown here) according to the requirements for cooling the electric machine and/or the bearings, gears and the required actuation pressure for actuating the separating clutch.
By arranging the hydraulic unit in the upper region of the drive, the installation space within the housing 102 is optimally used.
Fig. 3 also shows a section from above in a section view of the region of the drive according to the invention in which the second gear stage 162 is clearly visible here.
Here is also shown the hydraulic system 1 with a cooling line 13 connected as part of the first flow system 10. In the embodiment shown here, the oil 3 can be transported as a liquid through the cooling line 13.
This volumetric flow of liquid reaches a heat exchanger 40 designed as a heat exchange device, in which the liquid flows into an inlet 41 after absorbing heat from the motor. The liquid flows through the heat exchanger 40 and exits the cooled outlet 42 because the liquid has transferred heat in the heat exchanger 40 to the liquid (in this case water 4) in the second flow system 20. Thus, second flow system 20 functions as a cooling water circuit. The liquid in the second flow system 20 flows in a cooling water line 21. This liquid is supplied and fed to the hydraulic system 1 via a cooling water connection 22.
Due to the heat transfer from the electric machine to the liquid, the respective electric machine can be operated in an optimum temperature range and thus with a relatively high efficiency.
The liquid of the first flow system 10 passes through the outlet 42 before reaching the dispensing line 14, which enables the liquid to be dispensed in the housing 102.
Fig. 4 shows the flow path of the cooling medium in a sectional view. The most important units of the drive on the common axis of rotation 2 are shown here. It can be seen that the flow of liquid for cooling is divided at the plurality of branches 70 so as to be supplied to the plurality of motors 110,120 and to be able to cool at least the inside and the outside of the first motor 110. This results in a first path 71 for the cooling medium and a second path 72. In particular, by means of the second path 72, the cooling medium can reach the interior 73 of the first electric machine 110 via a hub 133, on which the rotor 111 of the first electric machine 110 rests, which interior is formed by the rotor or also by the stator of the first electric machine 110.
The other branch 70 enables cooling 15 of the stator of the first electric machine 110 and cooling 16 of the state of the second electric machine 120.
In order to lead the cooling medium from the radial outside to the radial inside of the two electric machines 110,120, in the embodiment shown here an intermediate line 30 is provided arranged axially on the outside, which intermediate line forms part of the line system between the oil filter and the hydraulic unit. On the radially inner side, the centrifugal force caused by the rotation ensures that the coolant is distributed.
When the cooling medium flows around the motor in such a manner as to be located again radially outside the motor, the cooling medium can be guided back to the oil bottom case 81 by the return flow 32.
In addition to cooling the various units, the hydraulic system according to the present invention may also be configured to actuate the disconnect clutch 150. The flow system required for this is shown in fig. 5.
The actuation line 90 (for guiding the oil 3 as pressure medium) is integrated in the housing 102. The pressure medium is supplied to an actuating system 153, which is designed as a hydraulic actuator. When a corresponding pressure is applied, the actuation system 153 causes the disconnect clutch 150 to close or open.
With the drive unit proposed here and the drive device equipped with it, a device for electrically driven motor vehicles is provided, the individual components of which can be optimally cooled so that they can be operated with a long service life or with optimal efficiency.
List of reference numerals
1 hydraulic unit 2 rotation axis 3 oil 4 water 10 first flow system 13 cooling line 14 cooling line 15 cooling of stator of first motor 16 second flow system 21 cooling water line 22 cooling water connection 30 outlet 50 volumetric flow source 60 cooling of inlet 42 of return 40 heat exchanger 41 cooling liquid in oil pan of external line 32 of intermediate line 31 cooling water connection 30 inlet 42 of heating liquid hydraulic control unit 70 branch 71 first cooling path 72 second cooling path 73 internal 80 oil filter 81 oil pan 90 actuation line 100 drive unit 101 rotation axis 102 housing 110 rotors 112 of first motor 111 first motor stator 120 second motor rotor 122 second motor stator 130 second motor stator 122 second motor stator 130 External teeth 132 of a first shaft of a shaft 131, central hollow shaft 133, external teeth 142 of an output shaft 141 of a hub 140, output shaft 141, first gear stage 150, disconnect clutch 151, radially outer side 152 of disconnect clutch, radially inner side 152 of disconnect clutch, actuation system 160 transmission 161 first gear 162 second gear stage 163, external teeth 170 differential transmission 171 input gear 172 of countershaft 164 third gear stage 200 drive device 210 internal combustion engine connection 220 output member 221 damper unit 222 clutch 223 internal engagement gear

Claims (10)

1. Drive unit (100) for a drive train of an electrically driven motor vehicle, in particular a hybrid vehicle, having a first electric machine (110) and a second electric machine (120) and an output shaft (140), wherein a rotor (121) of the second electric machine (120) is connected to the output shaft (140) for common rotation, characterized in that the drive unit (100) further has a separating clutch (150) by means of which a rotor (111) of the first electric machine (110) can be connected or connected to the output shaft (140) for transmitting torque, wherein the drive unit (100) further has a first flow system (10) for enabling a flow of a first liquid for at least partially cooling at least one electric machine (110,120) and a second flow system (20) for enabling a flow of a second liquid, wherein the first flow system (10) and the second flow system (20) are arranged and designed such that Heat from the first liquid in the first flow system (10) may be transferred to the second liquid in the second flow system (20).
2. The drive unit according to claim 1, characterized in that the drive unit (100) has a heat exchanger (40) for transferring heat from the first liquid to the second liquid.
3. Drive unit according to at least one of the preceding claims, characterized in that the first flow system (10) is further designed such that the first liquid can also be supplied to the separator clutch (150) for cooling and/or lubricating purposes.
4. Drive unit according to at least one of the preceding claims, characterized in that the first flow system (10) and the disconnect clutch (150) are arranged and designed such that the first fluid can be supplied from the first flow system (10) to the disconnect clutch (150) for the purpose of hydraulically actuating the disconnect clutch.
5. The drive unit according to claim 4, characterized in that the drive unit has: a volumetric flow source (50), in particular a pump; a hydraulic clutch actuator as an actuation system (153) for actuating the disconnect clutch (150); and a switching device, by means of which the liquid volume flow provided by the volume flow source (50) can be supplied sequentially to the electric motors (110,120) or to the clutch actuator.
6. The drive unit according to any one of claims 1 to 3, characterized in that the separator clutch (150) is designed to be electromechanically actuatable.
7. Drive unit according to at least one of the preceding claims, characterized in that the first flow system (10) of at least one electric machine (110,120) has a branch (70) into a first cooling path (71) and into a second cooling path (72), respectively, so that the electric machine (110,120) can be cooled in a radially inner portion (73) formed by its rotor (111,121) and also on its radially outer side.
8. Drive device with a drive unit according to one of claims 1 to 7 and with an internal combustion engine coupled or coupleable to the rotor (111) of the first electric machine (110) for common rotation.
9. The drive arrangement according to claim 8, comprising an input element of a transmission (160) or a wheel drive arrangement, wherein the internal combustion engine is mechanically connected or mechanically connectable to the transmission (160) via the drive unit (100) or to the input element of the wheel drive arrangement via the disconnect clutch (150) of the drive unit (100).
10. The drive arrangement according to any one of claims 8 and 9, comprising a first transmission stage (142) between the internal combustion engine and a first shaft (130) connected to the rotor (111) of the first electric machine (110) for co-rotation for the purpose of gradually increasing the speed of the rotary motion effected by the internal combustion engine on the first shaft (130).
CN201980041405.0A 2018-06-20 2019-06-04 Drive unit for a drive train of an electrically driven motor vehicle and drive arrangement with said drive unit Pending CN112334345A (en)

Applications Claiming Priority (3)

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DE102018114789.9 2018-06-20
DE102018114789.9A DE102018114789A1 (en) 2018-06-20 2018-06-20 Drive unit for a drive train of an electrically drivable motor vehicle and drive arrangement equipped therewith
PCT/DE2019/100493 WO2019242803A1 (en) 2018-06-20 2019-06-04 Drive unit for a drive train of an electrically drivable motor vehicle and drive arrangement having said drive unit

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EP (1) EP3810448B1 (en)
KR (1) KR20210020898A (en)
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